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Course Outline

Introduction

  • Wireshark: More than just a last-resort tool

Overview of Network Troubleshooting Concepts

  • Root cause analysis

Installing Wireshark

Overview of Wireshark Features

  • Navigating the UI interface

Capturing Traffic in the Test Environment

  • Selecting the network interface
  • Capturing packets on wired and wireless networks

Analyzing the Logs

  • Inspecting HTTP packets
  • Reviewing bidirectional TCP streams
  • Saving logs for offline review

Analyzing Connection Speed Issues with Specific Websites

  • Applying filters
  • Interpreting statistics

Analyzing by Traffic Type

  • DNS, ARP, IPv4, IPv6, ICMP, UDP, TCP, and HTTP/HTTPS
  • Investigating consistently slow connections over extended periods

Checking Response Times

  • Configuring delta time columns

Detecting Machines Infected with Malware

  • Analyzing ARP traffic

Inspecting Sources of Network Traffic

  • Intel ANS probes
  • Broken or misconfigured software causing network flooding

Pinpointing Performance Issues

  • Generating statistical charts and graphs
  • Customizing color codes in Wireshark
  • Filtering traffic
  • Utilizing the Wireshark Expert System and TCP/IP Resolution Flowchart

Troubleshooting Connections in Secured Network Environments

  • Handling proxies, firewalls, and clients

Configuring Wireshark for Optimal Performance

  • Non-intrusive analysis

Troubleshooting

Summary and Conclusion

Requirements

  • A solid understanding of TCP/IP networking principles
 21 Hours

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